A bone implant comprising an elongate body having a first end and a second endcoupled by ashaft is disclosed. The first portion is configured to couple to a first bone.The second portioncomprises a first expandable section comprising at least one expandablefeature. The firstexpandable section is configured to be received within a reverse countersinkin a second bone ina collapsed state and to expand within the reverse countersink. The expandablefeature couplesto a bearing surface of the reverse countersink. A surgical tool comprising ashaft and at leastone expandable cutting edge is disclosed. The shaft is sized and configured tobe received withina canal formed in a bone. The expandable cutting edge is formed integrallywith the shaft. Theexpandable cutting edge is configured to expand from a collapsed position toan expandedposition for forming a reverse countersink.
